Display panel and display device

ABSTRACT

A display panel includes a display region and a photoelectric sensing region, a plurality of spacer, a plurality of first support pillars, a plurality of second support pillars, and a plurality of third support pillars. The display region is located outside the photoelectric sensing region; and the photoelectric sensing region includes a light transmitting region and a frame area surrounding the light transmitting region, and the frame region includes: a first region, a second region, and a third region. The plurality of the spacers are arranged in an array, and located within the display region, but not located within the light transmitting region. The plurality of the first support pillars are located within the first region. The plurality of the second support pillars are located within the second region. The plurality of the third support pillars are located within the third region.

The application claims priority to Chinese patent application No.202010243978.6, filed on Mar. 31, 2020, the entire disclosure of whichis incorporated herein by reference as part of the present application.

TECHNICAL FIELD

At least an embodiment of the present disclosure relates to a displaypanel and a display device.

BACKGROUND

In general, the display devices (e.g., mobile phones, tablet PC, etc.)comprise photoelectric sensing devices, such as, an image capturingdevice or a fingerprint recognition device, which is usually disposed ona side outside the display region of the display screen. However, it isno conductive to a full design of display screen with narrow bezelbecause the installation of the image capturing device needs a certainarea. For example, the image capturing device can be combined with thedisplay region of the display screen, and a place can be reserved in thedisplay region for the image capturing device (e.g., a front imagecapturing device) to maximize the display region of the display screen.To ensure the intensity of the signals received by the devices, theplace reserved for the image capturing device needs to have a hightransmittance. To ensure the imaging effect of the image capturingdevice, the place reserved for the image capturing device also needs tohave good homogeneity.

SUMMARY

An embodiment of the present disclosure provides a display panelcomprising: a display region and a photoelectric sensing region, aplurality of spacer, a plurality of first support pillars, a pluralityof second support pillars, and a plurality of third support pillars. Thedisplay region is located outside the photoelectric sensing region, thedisplay region comprises a plurality of pixels arranged in an array, andeach pixel of the plurality of the pixels comprises a plurality of colorsub-pixels; and the photoelectric sensing region comprises a lighttransmitting region and a frame area surrounding the light transmittingregion, and the frame region comprises: a first region, a second region,and a third region. The first region surrounds the light transmittingregion. The second region is located on a side of the first region awayfrom the light transmitting region, and surrounds the first region. Thethird region is located on a side of the second region away from thelight transmitting region, and located between the second region and thedisplay region to separate the second region from the display region.The plurality of the spacers are arranged in an array, and locatedwithin the display region, but not located within the light transmittingregion. The plurality of the first support pillars are located withinthe first region, arranged around the light transmitting region, andspaced from each other. The plurality of the second support pillars arelocated within the second region, arranged around the second region, andspaced from each other. The plurality of the third support pillars arelocated within the third region, and arranged in an array.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a first substrate; a second substrateopposite to the first substrate; a black matrix located on a side of thesecond substrate adjacent to the first substrate, covering the framearea, and defining the plurality of the color sub-pixels in the displayregion, wherein orthographic projections of the plurality of thespacers, orthographic projections of the plurality of the first supportpillars, orthographic projections of the plurality of the second supportpillars, and orthographic projections of the plurality of the thirdsupport pillars on the first substrate are located within anorthographic projection of the black matrix on the first substrate; anda protection layer located in the second substrate adjacent to andlocated on a side of the black matrix adjacent to the first substrate,covering the frame region and the display region, wherein the pluralityof the spacers, the plurality of the first support pillars, theplurality of the second support pillars, and the plurality of the thirdsupport pillars are located between the first substrate and theprotection layer to maintain a distance between the first substrate andthe second substrate.

For example, the display panel of an embodiment of the presentdisclosure: a first spacer layer located in the second region andlocated between the black matrix and the protection layer, and theorthographic projections of the plurality of the second support pillarsare located within an orthographic project of the first spacer layer onthe first substrate.

For example, in the display panel of an embodiment of the presentdisclosure, a planar arrangement pattern of the first spacer layer is aclosed ring surrounding the first region.

For example, in the display panel of an embodiment of the presentdisclosure, in the first region, the protection layer is directlycontacted with the black matrix; the protection layer has a stepconfiguration in the first region, the step configuration comprises afirst portion away from the second region and a second portion adjacentto the second region; and in a direction vertical to the firstsubstrate, a height of the first portion is less than a height of thesecond portion, and a height of the first support pillars is greaterthan a height of the second support pillars.

For example, in the display panel of an embodiment of the presentdisclosure, a planar arrangement pattern of the plurality of the firstsupport pillars comprises at least a ring.

For example, in the display panel of an embodiment of the presentdisclosure, the planar arrangement pattern of the plurality of the firstsupport pillars comprises a plurality of concentric rings; along radialdirections of the concentric rings, the first support pillars in theplurality of the concentric rings are aligned with each other, or thefirst support pillars in adjacent concentric rings of the plurality ofthe concentric rings are staggered to each other.

For example, in the display panel of an embodiment of the presentdisclosure, a ratio of a total area of the orthographic projections ofthe plurality of the first support pillars on the first substrate to atotal area of the orthographic projections of the plurality of thesecond support pillars on the first substrate is from 5 to 10.

For example, in the display panel of an embodiment of the presentdisclosure, a distance between centers of two adjacent the first supportpillars among the plurality of the first support pillars of the sameconcentric ring is equal to a length or a width of a pixel in thedisplay region.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a second spacer layer located in the thirdregion and located between the black matrix and the protection layer,and the orthographic projections of the plurality of the third supportpillars are located within an orthographic project of the second spacerlayer on the first substrate.

For example, in the display panel of an embodiment of the presentdisclosure, the first spacer layer and the second spacer layer areintegrated, or spaced away from each other by the protection layer.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a color film layer located on a side ofthe second substrate adjacent to the first substrate and comprises afirst portion, a second portion and a third portion, wherein the firstportion of the color film layer is located in the plurality of the colorsub-pixels in the display region, and an orthographic projection of thefirst portion of the color film layer on the first substrate does notoverlap with the orthographic projection of the black matrix on thefirst substrate; the second portion of the color film layer is locatedin the second region and configured as the first spacer layer, and anorthographic projection of the second portion of the color film layer inthe first substrate overlaps with the orthographic projection of theblack matrix in the first substrate; and the third portion of the colorfilm layer is located inside the third region and configured as thesecond spacer layer.

For example, in the display panel of an embodiment of the presentdisclosure, the plurality of the spacers located in the display regioncomprise a plurality of primary spacers and a plurality of secondaryspacers, a height of the primary spacers in the direction vertical tothe first substrate is greater than a height of the secondary spacers inthe direction vertical to the first substrate; a shape and size of eachof the plurality of the second support pillars and a shape and size ofeach of the plurality of the third support pillars are identical with ashape and size of each of the plurality of the secondary spacers; and ashape and size of each of the plurality of the first support pillars areidentical with a shape and size of each of the plurality of the primaryspacers.

For example, the display panel of an embodiment of the presentdisclosure further comprise: a buffer layer located on a side of thefirst substrate adjacent to the second substrate and directly contactedwith the first substrate; and a driving circuit layer located on a sideof the buffer layer away from the first substrate and between thedisplay region and the frame area, wherein the plurality of the spacers,the plurality of the first support pillars, the plurality of the secondsupport pillars, and the plurality of the third support pillars are alllocated between the driving circuit layer and the protection layer, thedriving circuit layer is not disposed in the light transmitting region,and an edge of the driving circuit layer adjacent to the lighttransmitting region is in the first region or on a border between thelight transmitting region and the first region.

For example, in the display panel of an embodiment of the presentdisclosure, in the light transmitting region, a first liquid crystallayer is disposed between the buffer layer and the second substrate, andthe first liquid crystal layer in in direct contact with the bufferlayer.

For example, in the display panel of an embodiment of the presentdisclosure, in the frame region and the display region, a second liquidcrystal layer is disposed between the protection layer and the drivingcircuit layer, a liquid crystal in the first liquid crystal layer is incommunication with a liquid crystal in the second liquid crystal layerthrough gaps among the plurality of the first support pillars, gapsamong the plurality of the second support pillar, and gaps among theplurality of the third support pillars.

For example, in the display panel of an embodiment of the presentdisclosure, the protection layer further covers the light transmittingregion; in the light transmitting region, the protection layer is indirect contact with the second substrate, the first liquid crystal layeris located between the buffer layer and the protection layer, and is indirect contact with the protection layer.

For example, in the display panel of an embodiment of the presentdisclosure, no liquid crystal is disposed in the light transmittingregion; in the light transmitting region, a gap between the secondsubstrate and the buffer layer is filled with air; the display panelcomprises a first sealant, and the first sealant is located between thesecond substrate and the buffer layer, surrounds the light transmittingregion, and is in direct contact with the buffer layer and theprotection layer.

For example, the display panel of an embodiment of the presentdisclosure further comprises a plurality of light transmitting regions,wherein two adjacent light transmitting regions comprise a first lighttransmitting region and a second light transmitting region,respectively; the display panel further comprises: an intermediateregion located between the second region surrounding the first lighttransmitting region and the second surrounding the second lighttransmitting region; a third spacer layer arranged to be in a same layeras the first spacer layer and in connection with the first spacer layer,and comprising a first portion and a second portion, wherein the firstportion and the second portion are opposed to each other in a direction,which is in a plane parallel to the first substrate, perpendicular to adirection from the first light transmitting region to the second lighttransmitting region, and the intermediate region is located between thefirst portion and the second portion; a plurality of fourth supportpillars arranged along the first portion and spaced away from eachother, wherein orthographic projections of the plurality of the fourthsupport pillars on the first substrate are located in an orthographicprojection of the first portion on the first substrate; a plurality offifth support pillars arranged along the second portion and spaced awayfrom each other, wherein orthographic projections of the plurality ofthe fifth support pillar on the first substrate are located in theorthographic projections of the second portion on the first substrate;in the direction perpendicular to the first substrate, the plurality ofthe fourth support pillars, the plurality of the fifth support pillarsand the plurality of the second support pillar are disposed in a samelayer, and a shape and size of each of the plurality of the fourthsupport pillars are identical with a shape and size of each of theplurality of the second support pillars.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a plurality of sixth support pillarslocated on a side of the first portion adjacent to the intermediateregion, arranged along the first portion and spaced away from eachother; and a plurality of seven support pillars located on a side of thesecond portion adjacent to the intermediate region, arranged alone thesecond portion and spaced away from each other, wherein in the directionperpendicular to the first substrate, the plurality of the sixth supportpillars, the plurality of the seven support pillars and the plurality ofthe first support pillars are disposed in a same layer, a shape and sizeof each of the plurality of the sixth support pillars and a shape andsize of each of the plurality of the seven support pillars are identicalwith a shape and size of each of the first support pillars.

For example, in the display panel of an embodiment of the presentdisclosure, planar shapes of the first portion and the second portionare both linear sections which are parallel to each other.

For example, in the display panel of an embodiment of the presentdisclosure, the black matrix covers the intermediate region, and astructure of the intermediate region is identical with a structure ofthe third region.

For example, in the display panel of an embodiment of the presentdisclosure, the intermediate region is an intermediate display region,the intermediate display region comprises a plurality of intermediatepixels arranged in an array, each of the plurality of the intermediatepixels comprises a plurality of color intermediate sub-pixels, the blackmatrix defines the color intermediate sub-pixels in the intermediatedisplay region, wherein a light transmittance of the intermediatedisplay region is less than or equal to a light transmittance of thedisplay region.

For example, in the display panel of an embodiment of the presentdisclosure, the protection layer further covers the intermediate displayregion; a thickness of a portion of the protection layer covering theintermediate display region in a direction perpendicular to the firstsubstrate is greater than a thickness of a portion of the protectionlayer covering the display region in a direction perpendicular to thefirst substrate.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a plurality of intermediate spacerslocated in the intermediate display region and arranged in an array,wherein a structure of the plurality of the intermediate spacers isidentical with a structure of the plurality of the spacers in thedisplay region.

For example, the display panel of an embodiment of the presentdisclosure further comprises: a plurality of intermediate spacerslocated in the intermediate display region and arranged in an array,wherein an arrangement density of the plurality of the intermediatespacers in the intermediate display region is less than an arrangementdensity of the plurality of the spacers in the display region.

For example, in the display panel of an embodiment of the presentdisclosure, the photoelectric sensing region comprises at least threelight transmitting regions and an auxiliary functional region, the atleast three light transmitting regions and the auxiliary functionalregion are arranged in a 2×2 matrix, an interval between a first row anda second row of the 2×2 matrix and an interval between a first columnand a second column of the 2×2 matrix form a cross region, a structurein the cross region is identical with a structure in the intermediateregion.

For example, in the display panel of an embodiment of the presentdisclosure, the display panel is a liquid crystal display panel, thefirst substrate is an array substrate, and the second substrate is acolor film substrate; or the display panel is an organiclight-transmitting diode (OLED) display panel, the first substrate is anarray substrate, and the second substrate is a package cover plate.

Another embodiment of the present disclosure provides a display devicecomprising any one of the above described display panels.

For example, in the display device of an embodiment of the presentdisclosure, a side of the second substrate away from the first substrateis a display side; the display device further comprises: a photoelectricsensing device located in the light transmitting region and on a side ofthe first substrate away from the second substrate, and configured toreceive light from the display side.

BRIEF DESCRIPTION OF DRAWINGS

In order to clearly illustrate the technical solution of the embodimentsof the disclosure, the drawings of the embodiments will be brieflydescribed in the following; it is obvious that the described drawingsare only related to some embodiments of the disclosure and thus are notlimitative of the disclosure.

FIG. 1A is an overall schematic planar view of a display panel providedin an embodiment of the present disclosure;

FIG. 1B is an overall schematic planar view of another display panelprovided in an embodiment of the present disclosure;

FIG. 1C is an overall schematic planar view of still another displaypanel provided in an embodiment of the present disclosure;

FIG. 2A is an enlarged schematic view of the photoelectric sensingregion and its surrounding area as shown in FIG. 1;

FIG. 2B is another enlarged schematic view of the photoelectric sensingregion and its surrounding areas as shown in FIG. 1;

FIG. 3A is a schematic sectional view taken along the A-A′ line in FIG.2A;

FIG. 3B is a schematic sectional view of the display panel including apart of the driving circuit layer and taken along a first directionprovided in an embodiment of the present disclosure;

FIG. 3C is a schematic sectional view of a part of the driving circuitlayer as shown in FIG. 3B, taken along a second direction;

FIG. 3D is another schematic sectional view taken along the line A-A′ inFIG. 2A;

FIG. 4 is still another schematic sectional view taken along the lineA-A′ in FIG. 2A;

FIG. 5 is yet another schematic sectional view taken along the line A-A′in FIG. 2A;

FIG. 6A is an overall schematic planar view of another display panelprovided in an embodiment of the present disclosure;

FIG. 6B is an overall schematic planar view of another display panelprovided in an embodiment of the present disclosure;

FIG. 6C is an overall schematic planar view of still another displaypanel provided in an embodiment of the present disclosure;

FIG. 6D is an overall schematic planar view of another display panelprovided in an embodiment of the present disclosure;

FIG. 7A is an enlarged schematic view of the photoelectric sensingregion and its surrounding areas as shown in FIG. 6A;

FIG. 7B is a schematic sectional view taken along the B-B′ line as shownin FIG. 7;

FIG. 8A is another enlarged schematic view of the photoelectric sensingregion and its surrounding area as shown in FIG. 6A;

FIG. 8B is a schematic sectional view taken along the C-C′ line in FIG.8A;

FIG. 9 is a schematic diagram of a method of preparing a display panelprovided in an embodiment of the present disclosure; and

FIG. 10 is a schematic view of a display device provided in anembodiment of the present disclosure.

DETAILED DESCRIPTION

In order to make objects, technical details and advantages of theembodiments of the disclosure apparent, the technical solutions of theembodiments will be described in a clearly and fully understandable wayin connection with the drawings related to the embodiments of thedisclosure. Apparently, the described embodiments are just a part butnot all of the embodiments of the disclosure. Based on the describedembodiments herein, those skilled in the art can obtain otherembodiment(s), without any inventive work, which should be within thescope of the disclosure.

Unless otherwise defined, all the technical and scientific terms usedherein have the same meanings as commonly understood by one of ordinaryskill in the art to which the present disclosure belongs. The terms“first,” “second,” etc., which are used in the description and theclaims of the present application for disclosure, are not intended toindicate any sequence, amount or importance, but distinguish variouscomponents. Also, the terms such as “a,” “an,” etc., are not intended tolimit the amount, but indicate the existence of at least one. The terms“comprise,” “comprising,” “include,” “including,” etc., are intended tospecify that the elements or the objects stated before these termsencompass the elements or the objects and equivalents thereof listedafter these terms, but do not preclude the other elements or objects.The phrases “connect”, “connected”, etc., are not intended to define aphysical connection or mechanical connection, but may include anelectrical connection, directly or indirectly. “On,” “under,” “right,”“left” and the like are only used to indicate relative positionrelationship, and when the position of the object which is described ischanged, the relative position relationship may be changed accordingly.

The drawings in the present disclosure are not strictly drawn accordingto the actual scale, and the number of various supporting columns is notlimited to the number as shown in the drawings. The specific size andnumber of various structures can be determined according to the actualrequirements. The drawings in the present disclosure are merely aschematic structural view.

In a display panel (e.g., a liquid crystal panel) equipped with aphotoelectric sensing device (e.g., an image capturing device or afingerprint recognition device), the region in which the image capturingdevice is disposed is generally configured to have spacers between anarray substrate and a color film substrate to maintain the cellthickness in the region and the structural stability to improve theuniformity of the region during use, thereby facilitating to ensure agood imaging effect of the image capturing device. However, such spacerswill prevent light from passing through the region to arrive at thephotoelectric sensing device, so that the region for disposing theimaging capturing device has a relatively low light transmittance. Ingeneral, the region in which the image capturing device is disposed isalso configured to contain driving circuits, such as, pixel circuits,including signal lines, thin film transistors, storage capacitors, andso on.

At least an embodiment of the present disclosure provides a displaypanel comprising: a display region and a photoelectric sensing region, aplurality of spacer, a plurality of first support pillars, a pluralityof second support pillars, and a plurality of third support pillars. Thedisplay region is located outside the photoelectric sensing region, thedisplay region comprises a plurality of pixels arranged in an array, andeach pixel of the plurality of the pixels comprises a plurality of colorsub-pixels; and the photoelectric sensing region comprises a lighttransmitting region and a frame area surrounding the light transmittingregion, and the frame region comprises: a first region, a second region,and a third region. The first region surrounds the light transmittingregion. The second region is located on a side of the first region awayfrom the light transmitting region, and surrounds the first region. Thethird region is located on a side of the second region away from thelight transmitting region, and located between the second region and thedisplay region to separate the second region from the display region.The plurality of the spacers are arranged in an array, and locatedwithin the display region, but not located within the light transmittingregion. The plurality of the first support pillars are located withinthe first region, arranged around the light transmitting region, andspaced from each other. The plurality of the second support pillars arelocated within the second region, arranged around the second region, andspaced from each other. The plurality of the third support pillars arelocated within the third region, and arranged in an array.

It should be noted that in the present disclosure, the number of thefirst support pillars 41, the number of the second support pillars 42,and the number of the support pillars 43 as shown in FIG. 3A, FIG. 3D,FIG. 4, and FIG. 5 are not completely corresponding to those in FIG. 2Aand FIG. 2B. These drawings in the present disclosure are merelyschematic views for representing the structural relations among variousstructures as described. In FIG. 2A and FIG. 2B, due to the dimensionlimitation, the orthographic projections of the primary spacers 401 andthe secondary spacers 402 on the black matrix do not appear completelylocated within the black matrix. However, in fact, in an embodiment ofthe present disclosure, the orthographic projections of the primaryspacers 401 and the secondary spacers 402 on the black matrix do notappear completely located within the black matrix. It is subject to textdescription of the claims and specification, while the drawings aremerely to schematically illustrate the planar arrangement pattern ofvarious structure.

As an example, FIG. 1A is an overall schematic planar view of a displaypanel provided in an embodiment of the present disclosure; FIG. 2A is anenlarged schematic view of the photoelectric sensing region and itssurrounding areas as shown in FIG. 1A; and FIG. 3A is a sectional viewtaken along the A-A′ line in FIG. 2A. As shown in FIG. 1A, the displaypanel comprises a display region 3 and a photoelectric sensing region20. The display region 3 is located on an outer side of thephotoelectric sensing region 20, e.g., the display region 3 surrounds atleast a part of the photoelectric sensing region 20. For example, in theembodiment as shown in FIG. 1A, the display region 3 surrounds all ofthe photoelectric sensing region 20. In other embodiments, the displayregion 3 can also surround a part of the photoelectric sensing region20. For instance, as shown in FIG. 1B, the photoelectric sensing region20 is located at a top corner of the display panel, and the displayregion 3 also surrounds a part of the photoelectric sensing region 20.Alternatively, for instance, as shown in FIG. 1C, the photoelectricsensing region 20 is located on the edge of the display panel, andlocated in the middle of an edge of the outer contour of the displaypanel. An end of the photoelectric sensing region 20 adjacent to thisedge is connected to the non-display region next to the edge, and thedisplay region 3 surrounds a portion of the photoelectric sensing region20 except the end of the photoelectric sensing region 20 in contact withthe non-display region. The cases as shown in FIGS. 1A-1C are onlyexemplary, and the particular position relation between the displayregion 3 and the photoelectric sensing region 20 is not limited to thatshown in FIGS. 1A to 1C, as long as the display region 3 surrounds atleast a part of the photoelectric sensing region 20.

By reference to FIGS. 2A and 3A, the display panel comprises: aplurality of first support pillars 41, a plurality of second supportpillars 42, and a plurality of third support pillars 43. The displayregion 3 is located at an outer side of the photoelectric sensing region20, and comprises a plurality of pixels 8 arranged in an array. Eachpixel of the plurality of the pixels 8 comprises a plurality of colorsub-pixels, e.g., comprising a first sub-pixel 81, a second sub-pixel 82and a third sub-pixel 83. For example, the first sub-pixels 81, thesecond sub-pixels 82 and the third sub-pixels 83 transmits red, blue,green light, respectively. The photoelectric sensing region 20 comprisesa light transmitting region 1 and a frame region 2 surrounding the lighttransmitting region 1; the frame region 2 comprises: a first region 21,a second region 22 and a third region 23. The first region 21 surroundsthe light transmitting region 1. The second region 22 is located on aside of the first region 21 away from the light transmitting region 1,that is, the second region 22 is located on an outer side of the lighttransmitting region 1, and surrounds the first region 21. The thirdregion 23 is located on a side of the second region 22 away from thelight transmitting region 1, and located between the second region 22and the display region 3 to separate the second region 22 from thedisplay region 3. The plurality of the spacers 40 are arranged in anarray, and located within the display region 3, rather than locatedwithin the light transmitting region 1. The plurality of the firstsupport pillars 41 are located within the first region 21, arrangedaround the light transmitting region 1, and spaced away from each other.The plurality of the second support pillars 42 are located within thesecond region 22, arranged around the second region 22, and spaced awayfrom each other. The plurality of the third support pillars 43 arelocated within the third region 23, and arranged in an array. In thedisplay panel, the plurality of the spacers 40 are located within thedisplay region 3, but are not located within the light transmittingregion 1, and thus the light transmittance of the light transmittingregion 1 is significantly increased. Although there is no support by thespacers inside the light transmitting region 1, the plurality of thefirst support pillars 41 and the plurality of the second support pillars42 located within the frame region 2 and spaced away from each other areable to maintain the stability on the periphery of the lighttransmitting region so as to maintain the spatial stability of the lighttransmitting region 1 and improve the regional stability of the lighttransmitting region 1, thereby increasing the light transmittance of thelight transmitting region 1 and the color uniformity and stability ofthe light transmitted from the light transmitting region 1. Moreover, inan embodiment where liquid crystals are disposed within the first region21, the second region 22 and the third region 2, the plurality of thefirst support pillars 41 are spaced away from each other and theplurality of the second support pillars 42 are spaced away from eachother, so that the liquid crystal within the light transmitting region 1can flow through the gaps among the plurality of the first supportpillars 41 and the gaps among the plurality of the second supportpillars 42 to ensure the flowability of the liquid crystal within thelight transmitting region 1 and the liquid crystal in other regions,such as, the first region 1 and the second region 2. When an ambienttemperature changes, the volume of the liquid crystal changes, and theheight of the plurality of the first support pillars 41 and the heightof the plurality of the second support pillars 42 change synchronously,so that the volume of the liquid crystal is matched with the cellthickness. In addition, no support pillar is disposed in the lighttransmitting region 1, thus maintaining the flowability of the liquidcrystal can avoid any abnormal display caused by mismatch between thevolume of the liquid crystal in the light transmitting region 1 and thecell thickness. Moreover, during the manufacture of the display panel,when the display panel is a liquid crystal display panel, in the step offilling the liquid crystal, it is difficult to precisely drop the liquidcrystal into the light transmitting region 1 because the area of thelight transmitting region 1 is very small as compared with the dropletsof the added liquid crystal. Thus, the liquid crystal can be droppedinto the display region 3 which has a relatively large area, and flowinto the light transmitting region 1 sequentially through the secondregion 22 and the first region 21, as well as the gaps among theplurality of the first support pillars 41 and the gaps among theplurality of the second support pillars 42, so that the liquid crystalis filled into the light transmitting region 1. If the plurality of thefirst support pillars 41 or the plurality of the second support pillars42 form a closed ring around the whole light transmitting region 1, theabove-mentioned technical effect cannot be achieved. Moreover, in thethird region 23, the plurality of the third support pillars 43 are alsospaced away from each other. The third region 23 is located in the outerside of the first region 21 and the second region 22 (i.e., the sideaway from the light transmitting region) and surrounds at least a partof the light transmitting region 1. Thus, the third region 23 is closerto display region 3, e.g., adjacent to the display region 3. The displayregion 3 is configured to contain a plurality of spacers arranged in anarray. As a result, the configuration of the plurality of the thirdsupport pillars arranged in an array in the third region 23 can allowthe structure of the third region 3 adjacent to the display region 3 tobecome consistent with the structure of the display region 3, and allowthe cell thickness to become uniform. Thus, the third region 3 can serveas a transition region from the frame region 2 and the display region 3to allow the structure of the edge region of the display region 3 nearthe frame region 2 to be uniform and consistent with the structure ofthe intermediate area of the display region 3, thereby achieving auniform display effect in the whole display region 3. For example, thethird region 23 is a dummy region to maintain the uniformity of the edgeportion of the display region 3 overlapping the photoelectric sensingregion 20.

For example, the arrangement density and the array form of the pluralityof the third support pillars 43 arranged in an array in the third region23 are the same as those of the plurality of the spacers arranged in anarray in the display region 3, so that the structure of the displayregion 3 adjacent to the third region 23 becomes consistent with thestructure of the display region 3, the structure of the edge region ofthe display region 3 near the frame region 2 is uniform and consistentwith the structure of the intermediate region of the display region 3,which is more beneficial to achieve a uniform display effect in thewhole display region 3. Of course, in other embodiments, the arrangementdensity and the array form of the plurality of the third support pillars43 arranged in an array in the third region 23 may be different from thearrangement density and the array form of the plurality of the spacersarranged in an array in the display region 3.

For example, the side of the second substrate 102 away from the firstsubstrate 101 is a display side. As shown in FIG. 3A, for example, aphotoelectric sensing device 15 can be disposed on a side of the firstsubstrate 101 away from the second substrate 102, and configured toreceive light from the display side, that is, the light from the displayside passes through the light transmitting region into the photoelectricsensing device 15. Thus, the structure of the light transmitting region1 can affect the magnitude of the light transmittance and the coloruniformity of the transmitted light, thereby affecting the amount of thelight, as well as the brightness and color uniformity of the lightreceived by the photoelectric sensing device 15.

For example, the arrangement density of the first support pillars 41 isgreater than that of the second support pillars 42, that is, thedistance between the two adjacent the first support pillars 41 is lessthan the distance between the two adjacent the second support pillars 42so as to provide a more stable supporting in the first region 21 that iscloser to the light transmitting region 1.

For example, the arrangement density of the secondary spacers 402 in thedisplay region 3 is 287/288, that is, the display region 3 is configuredto contain 287 the secondary spacers 402 per 288 sub-pixels; and thearrangement density of the primary spacers 401 is 1/288, that is, thedisplay region 3 is configured to contain 1 primary spacer per 288sub-pixels. For example, the arrangement density of the third supportpillars 43 within the third region 23 is the same as that of thesecondary spacers 402 so that the arrangement and the cell thickness ofthe support pillars in the third region 23 are identical to thearrangement and the cell thickness of the spacers in the display region3, respectively.

For example, as shown in FIG. 3, the display panel further comprises: afirst substrate 101, a second substrate 102, a black matrix 5 and aprotection layer 6. The second substrate 102 is opposed to the firstsubstrate 101; the black matrix 5 is located on a side of the secondsubstrate 102 adjacent to the first substrate 101 and covers the frameregion 2, so that the frame region 2 is not light transmissive, and theblack matrix 5 defines the aforesaid plurality of color sub-pixels inthe display region 1; the orthographic projections of the plurality ofthe spacers 40, the orthographic projections of the plurality of thefirst support pillars 41, the orthographic projections of the pluralityof the second support pillars 42, the orthographic projections of theplurality of the third support pillars 43 on the first substrate 101 arelocated in the orthographic projections of black matrix 5 on the firstsubstrate 101 so as to avoid that the plurality of the spacers 40 affectthe aperture ratio in the display region 3. The protection layer 6 islocated in the second substrate 102 and located on a side of the blackmatrix 5 adjacent to the first substrate 101, and covers the frameregion 2 and display region 3 to protect the plurality of the sub-pixelsand the black matrix on the second substrate 102 in the frame region 2and the display region 3. The plurality of the spacers 40, the pluralityof the first support pillars 41, the plurality of the second supportpillars 42, the plurality of the third support pillars 43 are locatedbetween the first substrate 101 and the protection layer 6 to maintainthe cell thickness between the first substrate 101 and the secondsubstrate 102.

For example, the display panel further comprises a first spacer layer 71which is located in the second region 22 and between the black matrix 5and the protection layer 6. The orthographic projections of theplurality of the second support pillars 42 on the first substrate 101are located within the orthographic projections of the first spacer 71on the first substrate 101. To simplify the manufacture process of thedisplay panel, the second support pillars 42, the third support pillars43, and the secondary spacers 402 in the display region 3 can be formedby patterning the same film layer with the same mask in one step. Thus,the height of the second support pillars 42 in the directionperpendicular to the first substrate 101, the height of the thirdsupport pillars 43 in the direction perpendicular to the first substrate101, and the height of the secondary spacers 402 in the display region 3are the same. In this case, the height h2 of the second support pillarsin the direction perpendicular to the first substrate 101 is limited.The height h2 is superimposed with the thickness of the first spacerlayer 71 in the direction perpendicular to the first substrate 101 sothat each of the second support pillars 42, together with the firstspacer layer 71, maintains the distance between the first substrate 101and the second substrate 102 in the second region 22. When the secondsupport pillars 42 are deformed by a force so as to cause a change ofthe height, the first spacer layer 71 can help to reduce the influenceof the change on maintaining of the desired distance between the firstsubstrate 101 and the second substrate 102 in the second region 22. Ofcourse, if the simplification of manufacture process is not taken intoconsideration, the second support pillar 42 can have any height in thedirection perpendicular to the first substrate 101 as required.

For example, as shown in FIG. 2A, the planar arrangement pattern of thefirst spacer layer 71 is a closed ring around the first region 21 tomaintaining the stability of the periphery of the light transmittingregion 1 at various positions around the light transmitting region 1,thereby increasing the light transmittance of the light transmittingregion 1, as well as the color uniformity and stability of the lighttransmitted from the light transmitting region 1.

For example, as shown in FIG. 3A, in the first region 21, the protectionlayer 6 is in direct contact with the black matrix 6, that is, the firstregion 21 is not configured to comprise the first spacer layer 71 orother structure having a similar height to the first spacer layer 71, orcomprise any other layer or structure present between the protectionlayer 6 and the black matrix 6 in the direction perpendicular to thesecond substrate 102. As a result, the protection layer 6 comprises astep configuration in the first region 21, and the step configurationcomprises a first portion 61 away from the second region 22 and a secondportion 62 adjacent to the second region 22. In the directionperpendicular to the first substrate 101, the height H1 of the firstportion 61 is less than the height H2 of the second portion 62, and theheight of the first support pillars 41 is greater than the height of thesecond support pillars 42. Because the second region 22 away from thelight transmitting region 1 is configured to comprise the first spacerlayer 71, while the first region 21 is not configured to comprise thefirst spacer layer 71, the step configuration is not located in thelight transmitting region 1 so as to avoid any influence on the lighttransmitting uniformity of the light transmitting region 1. It should benoted that the height of the first portion 61 refers to the distancebetween the surface of the first portion 61 away from the secondsubstrate 102 and the surface of the second substrate 102 facing thefirst substrate 101, while the height of the second portion 62 refers tothe distance between the surface of the second portion 62 away from thesecond substrate 102 and the surface of the second substrate 102 facingthe first substrate 101.

For example, the planar arrangement pattern of the plurality of thefirst support pillars 41 as a whole comprises at least one ring. Forexample, as shown in FIG. 2A, the planar arrangement pattern of theplurality of the first support pillars 41 as a whole comprises aplurality of concentric rings, e.g., two concentric rings. The number ofthe first support pillars 41 can be determined by comparing thedimension of the first support pillars 41 and the area of the frameregion 2, so as to make a design in accordance with display panels ofdifferent sizes to achieve better supporting effect, as illustrated indetails below. For example, the shape of each concentric ring isconsistent with the planar shape of the light transmitting region 1surrounded by the concentric ring so as to facilitate the plurality ofthe first support pillars 41 to better maintaining the stability of theperiphery of the light transmitting region 1. For example, in thisembodiment, the planar patterns of the light transmitting region 1 andeach concentric ring are all circular. In other embodiments, when theplanar shape of the light transmitting region 1 is rectangular, theshape of each concentric ring is also rectangular; and when the shape ofthe light transmitting region 1 is ellipsoidal, the shape of eachconcentric ring is also ellipsoidal. The situations as listed above aremerely exemplary, and the planar shape of the light transmitting region1 and the shape of each concentric ring is not limited in theembodiments of the present disclosure.

For example, along the radial directions of the plurality of theconcentric rings, the first support pillars 41 in the plurality of theconcentric rings are aligned with each other; as shown in FIG. 2A, thefirst support pillars 411 located in the first concentric ring near thelight transmitting region 1 are aligned with the first support pillars412 located in the second concentric ring away from light transmittingregion 1 along the radial directions. Alternatively, along the pluralityof the concentric rings, the first support pillars in adjacentconcentric rings are staggered with each other; as shown in FIG. 2B, thefirst support pillars 411 located in the first concentric ring near thelight transmitting region 1 are staggered with the first support pillars412 located in the second concentric ring away from light transmittingregion 1 and adjacent to the first concentric ring, that is, they arenot aligned along the radial directions, so as to provide a bettersupporting effect; the supporting effects of the first support pillarsin the adjacent concentric rings are complementary in their positions soas to provide uniform and consistent supporting effect at variouspositions around the light transmitting region 1, thereby bettermaintaining the uniformity and stability of the light transmittingregion 1. Other unspecified features of the embodiment as shown in FIG.2B are the same as those in FIG. 2A, and please refer to the descriptionof the embodiment as shown in FIG. 2A.

For example, the ratio of the total area of the orthographic projectionsof the plurality of the first supporting pillars 41 on the firstsubstrate 101 to the total area of the orthographic projections of theplurality of the second supporting pillars 42 on the first substrate 101is from 5 to 10, which can achieve good supporting effect asdemonstrated by test. For example, the ratio of the total area of theorthographic projections of the plurality of the first support pillars41 on the first substrate 101 to the area of the frame region 2 is 0.4%to 0.6%, the ratio of the total area of the orthographic projections ofthe plurality of the second support pillars 42 on the first substrate101 to the area of the frame region 2 are 0.06% to 0.08%, which canachieve good supporting effect, as well as uniform and harmoniousstructure design as demonstrated by test and calculation. For example,when the planar shape of the frame region 2 is a circular ring, the areaS of the frame region can be calculated by the formula for calculatingthe area of circular ring: S=π×(a2−b2)/4, where a is the diameter of thecircle where the outer ring of the frame region is located, and b is thediameter of the circle where the inner ring of the frame region islocated. When the planar shape of the frame region 2 is another shape,it can be calculated in accordance with actual conditions.

For example, the distance between the centers of two adjacent the firstsupport pillars of the plurality of the first support pillars 41 locatedin the same concentric ring is equal to the length or width of a pixelin the display region 3. It should be noted that the pixel refers to apixel unit comprising a plurality sub-pixels (e.g., comprising threesub-pixels RGB). When the areas of the frame region 2, as well as theareas of one the first support pillar 41 and one the second supportpillar 42 are determined, the numbers of the first support pillars 41and the second support pillars 42 are determined in accordance with theabove described ratio. After calculation, when the distance between thecenters of two adjacent the first support pillars of the plurality ofthe first support pillars 41 located in the same concentric ring isequal to the length or width of a pixel in the display region 3, thefirst support pillars 41 and the second support pillars 42 haveappropriate densities, and are convenient to make, and exhibit goodsupporting and stabilizing effects. For example, the sum of one secondsupport pillar 42 and the gap between the second support pillars 42 isfrom 100 μm to 200 μm.

For example, as shown in FIG. 3A, the display panel further comprises asecond spacer layer 72. The second spacer layer 72 is located in thethird region 23 and between the black matrix 5 and the protection layer6. The orthographic projections of the plurality of the third supportpillars 43 on the first substrate 101 are located within theorthographic projections of the second spacer layer 72 on the firstsubstrate 101. To simplify the manufacture process of the display panel,the second support pillars 42, the third support pillars 43, and thesecondary spacers 402 in the display region 3 can be formed bypatterning the same film layer with the same mask in one step. Thus, theheight of the third support pillars 43 in the direction perpendicular tothe first substrate 101, the height of the second support pillars 42 inthe direction perpendicular to the first substrate 101, and the heightof the secondary spacers 402 are the same. In this case, the height h3of the third support pillars in the direction perpendicular to the firstsubstrate 101 is limited. The height h3 is superimposed with thethickness of the second spacer layer 72 in the direction perpendicularto the first substrate 101 so that each the third support pillar 43,together with the second spacer layer 72, maintains the distance betweenthe first substrate 101 and the second substrate 102 in the third region23. When the third support pillars 43 are deformed by a force so as tocause a change of height, the second spacer layer 72 can help to reducethe influence of the change on maintaining the desired distance betweenthe first substrate 101 and the second substrate 102 in the third region23. Of course, if the simplification of manufacture process is not takeninto consideration, the third support pillar 43 can have any height inthe direction perpendicular to the first substrate 101 as required.

For example, in the embodiment as shown in FIG. 3A, the first spacerlayer 71 and the second spacer layer 72 are spaced away from each otherby the protection layer 6; alternatively, in another embodiment, asshown in FIG. 3D, the first spacer layer 71 is integrated with thesecond spacer layer 72, to simplify the structure of the display panel.Moreover, in this case, the first spacer layer 71 and the second spacerlayer 72 can be formed by performing the same patterning process on thesame film layer to simplify the manufacture process.

For example, as shown in FIG. 3A, the display panel comprises a colorfilm layer, which is located on a side of the second substrate 102adjacent to the first substrate 101, and comprises a first portion, asecond portion and a third portion. A portion of the black matrixlocated in the display region 3 defines a plurality of color sub-pixels81/82/83. The first portion of the color film layer is located in theplurality of the color sub-pixels 81/82/83 in the display region 3 asthe color filter layers for the plurality of color sub-pixels 81/82/83.The second portion of the color film layer is located in the secondregion 22 and configured to serve as the first spacer layer 71, and theorthographic projection of the second portion of the color film layer onthe first substrate 101 overlaps with the orthographic projection of theblack matrix 5 on the first substrate 101. The third portion of thecolor film layer is located in the third region 23 and configured toserve as the second spacer layer 72. As such, it is feasible tosimultaneously form the color films in the plurality of the sub-pixels81/82/83 in the display region 3, the first spacer layer 71 and thesecond spacer layer 72 by performing a single patterning process on thefilm layer to form the color film, simplifying the manufacture processand increasing the production efficiency. The first spacer layer 71 andthe second spacer layer 72 can be color films of any color, e.g., red,green, blue, white, or the like, and it is not limited in this way inthe embodiments of the present disclosure. In the aforesaid embodiments,a portion of the color film layer serves as the first spacer layer 71and the second spacer layer 72 to simply the manufacture process of thedisplay panel. In this case, e.g., in the embodiment as shown in FIG.3D, the color film layer in the display region 3 can directly extend tothe third region 23 to serve as the second spacer layer 72. Certainly,in other embodiments, the color film layer in the display region 3 canbe disconnected to the second spacer layer 72. Other unspecifiedfeatures of the embodiment as shown in FIG. 3 D are the same as those inFIG. 3A, and please refer to the description of the embodiment as shownin FIG. 3A. It should be noted that in other embodiments, the thirdregion 23 can be configured to have no second spacer layer 72.Alternatively, it can be configured to not use a color film layer as thefirst spacer layer 71 and the second spacer layer 72, but utilize otherfilms to prepare the first spacer layer 71 and the second spacer layer72. The first spacer layer 71 and the second spacer layer 72 can be anorganic film layer or an inorganic film layer. For example, thematerials of the organic film layer may be, e.g., a resin; and thematerials of the inorganic film layer may be, e.g., silicone oxide,silicon nitride, or silicon dioxide, etc.

For example, the plurality of the spacers 40 located in the displayregion 3 comprise a plurality of primary spacers 401 and a plurality ofsecondary spacers 402, the height h41 of the primary spacers 401 in thedirection perpendicular to the first substrate 101 is greater than theheight h42 of the secondary spacers 402 in the direction perpendicularto the first substrate 101. The shape and size of each of the pluralityof the second support pillars 42 and the shape and size of each of theplurality of the third support pillars 43 are the same as a shape andsize of each of the plurality of the secondary spacers 402; and theshape and size of the plurality of the first support pillars 41 are thesame as the shape and size of the plurality of the primary spacers 401.As such, the height h1 of each of the first support pillars 41 in thedirection perpendicular to the first substrate 101 is greater than theheight h2 of each the second support pillars 42 in the directionperpendicular to the first substrate 101, and the height h1 of each ofthe first support pillars 41 in the direction perpendicular to the firstsubstrate 101 is greater than the height h3 of each the third supportpillars 43 in the direction perpendicular to the first substrate 101 soas to supplement the step structure between the first region 21 and thesecond region 22 and the third region 23 caused by absence of a spacerlayer. Moreover, it is feasible to form the plurality of the secondsupport pillars 42, the plurality of the third support pillars 43 andthe plurality of the secondary spacers 402 by use the same mask in thesame patterning process, and form the plurality of the first supportpillars 41 and the plurality of the primary spacers 401 by use of thesame mask in the same patterning process.

For example, in other embodiments, the plurality of the third supportpillars 43 can comprise a plurality of primary support pillars and aplurality of secondary support pillars. The shape and size of each ofthe plurality of the primary support pillars are the same as the shapeand size of each of the plurality of the primary spacers 401, the shapeand size of each the plurality of the secondary support pillars are thesame as the shape and size of each of the plurality of the secondaryspacers 402, so that it is feasible to form the plurality of the secondsupport pillars 42, the plurality of the third support pillars 43 andthe plurality of the secondary spacers 402 by use the same mask in thesame patterning process, and form the plurality of the first supportpillars 41 and the plurality of the primary spacers 401 by use of thesame mask in the same patterning process.

For example, as shown in FIG. 3A, the display panel further comprises abuffer layer 11 and a drive circuit layer 12. The buffer layer 11 islocated on a side of the first substrate 101 adjacent to the secondsubstrate 102 and in direct contact with the first substrate 101 toprevent the subsequent etching process from damaging the first substrate101. That is, in the light transmitting region 1, no other layer orstructure is present between the buffer layer 11 and the first substrate101, which is helpful to increase the light transmittance of the lighttransmitting region 1 to improve the sensing effect of the photoelectricsensing device and achieve a better imaging effect, e.g., betterphotographing effect, more rapid and accurate fingerprint recognitioneffect, and the like.

The driving circuit layer 12 is located on a side of the buffer layer 11away from the first substrate 101 and within the display region 3 andthe frame region 2. The plurality of the spacers 40, the plurality ofthe first support pillars 41, the plurality of the second supportpillars 42, the plurality of the third support pillars 43 are alllocated between the driving circuit layer 12 and protection layer 6, thelight transmitting region 1 is not configured to comprise the drivingcircuit layer 12, the edge of the driving circuit layer 12 adjacent tothe light transmitting region 1 is located at the border of the lighttransmitting region 1 and the first region 21, as shown in FIG. 3A.Because the thickness of the driving circuit layer 12 in the directionperpendicular to the first substrate 101 is greater than the thicknessof buffer layer 11 in the direction perpendicular to the first substrate101, while the light transmitting region 1 is not configured to comprisethe driving circuit layer 12, at the edge of the driving circuit layer12 adjacent to the light transmitting region 1, the driving circuitlayer 12 and the buffer layer 11 has a step configuration (or stepstructure), so that the step configuration (or step structure) at theedge position of the driving circuit layer 12 does not fall within thelight transmitting region 1 so as to prevent the step configuration inthe light transmitting region 1 from affecting the uniform of the lighttransmittance and the color uniformity of the transmitted light.Alternatively, in other embodiments, the edge of the driving circuitlayer 12 adjacent to the light transmitting region 1 is located in thefirst region 21.

FIG. 3B is a schematic sectional view of the display panel including apart 103 of the driving circuit layer and taken along a first directionprovided in an embodiment of the present disclosure; and FIG. 3C is aschematic sectional view of the display panel including a part 103 ofthe driving circuit layer as shown in FIG. 3B and taken along a seconddirection, and the first direction is perpendicular to the seconddirection. For example, the display panel is a liquid crystal displaypanel, and a liquid crystal is filled between the first substrate 101and the second substrate 102. By reference to FIG. 3B and FIG. 3C, thedriving circuit layer 12 comprises thin-film transistors. A drivetransistor is taken as an example. As shown in FIG. 3B, the thin-filmtransistor comprises a gate electrode 50, a semiconductor layer 60 and asource and drain electrode layer 18; as shown in FIG. 3C, the source anddrain electrode layer 18 comprises a source electrode 181 and a drainelectrode 182. The driving circuit layer 12 further comprises a gateinsulating layer 16 covering the gate electrode 5, a first insulatinglayer 17 insulating the semiconductor layer 60 from the source electrode181 and the drain electrode 182, a common electrode 31, a pixelelectrode 32 opposed to the common electrode 31, a second insulatinglayer 19 insulating the common electrode 31 from the source electrode181 and the drain electrode 182, and a third insulating layer 35insulating the common electrode 31 from the pixel electrode 32. Thepixel electrode 32 is in electric connection with the drain electrode182 by a via hole through the second insulating layer 19 and the thirdinsulating layer 35. For example, the common electrode 31 is formedacross the surface, but disconnected at a position where the via hole isdisposed. By applying a common voltage to the common electrode and apixel voltage to the pixel electrode, the pixel voltage and the commonvoltage forms a deflection electric field to deflect the liquid crystal,which are used as an optical switch to achieve a color display incooperation with the color film layer. For example, the driving circuitlayer 12 further comprises various signal lines (not shown), e.g., apower line that supplies a voltage to the common electrode, a gate linethat supplies a scan voltage to the gate electrode 50, and a data linethat supplies a data voltage to the source electrode 181 and the drainelectrode 182, which can be designed with reference to conventionaltechniques in the art.

For example, as shown in FIG. 3A, in the light transmitting region 1, afirst liquid crystal 131 is disposed between the buffer layer 11 and thesecond substrate 102, and in direct contact with the buffer layer. Thefirst liquid crystal layer 131 comprises a portion on a firstorientation layer 91 on the second substrate 102 located in the lighttransmitting region, a portion on a second orientation layer 92 on thefirst substrate 101 in the light transmitting region, and a first liquidcrystal located between the first orientation layer 91 and the secondorientation layer 92. The materials of the first orientation layer 91and the second orientation layer 92 are, e.g., polyimide (PI). When thefirst liquid crystal layer is filled between the buffer layer 11 and thesecond substrate 102, as compared with filling by air, if air is filled,the light will be reflected and refracted on the bottom surface of thesecond substrate 102 and the top surface of the first substrate 101,thereby reducing the transmittance. The refractive indexes of the firstliquid crystal layer and the glass substrate (e.g., the first substrate101 and the second substrate 102 are both glass substrates) are similar.Therefore, after the first liquid crystal layer 131 is filled, the firstsubstrate 101, the first liquid crystal layer 131 and the secondsubstrate 102 as a whole can be regarded as a medium, so that the numberof times of light reflection on the bottom surface of the secondsubstrate 102 and the top surface of the first substrate 101 will bereduced, thereby improving the transmittance. In such embodiment, noprotection layer is present between the first substrate 101 and thesecond substrate 102 in the light transmitting region 1. There aremerely the buffer layer 11 and the first liquid crystal layer 131.Neither support pillar nor spacer nor any other structure having asimilar height to the first support pillar, the second support pillar,or the spacer is disposed. As compared with this embodiment, if spacersor support pillars or like structures are disposed in the lighttransmitting region 1, the spacers or support pillars or similarstructures will prevent light from passing through the lighttransmitting region to the photoelectric sensing device so that theregion in which the image capturing device is disposed has a relativelylow light transmittance, which results in a decreased brightnessuniformity and color uniformity of the light passing through the lighttransmitting region 1 to the photoelectric sensing device 15, and is notbeneficial to obtain a better imaging effect.

For example, in the frame region 2 and the display region 3, a secondliquid crystal layer 132 is disposed between the protection layer 6 andthe driving circuit layer 12. The liquid crystal in the first liquidcrystal layer 131 is in communication with the liquid crystal in thesecond liquid crystal layer 132 via the gaps among the plurality of thefirst support pillars 41, the gaps among the plurality of the secondsupport pillars 42, and the gaps among the plurality of the thirdsupport pillars 43.

For example, in another embodiment, as shown in FIG. 4, the protectionlayer 6 further covers the light transmitting region 1. In the lighttransmitting region 1, the protection layer 6 is in direct contact withthe second substrate 102; and the first liquid crystal layer 132 islocated between the buffer layer 11 and the protection layer 6, and isin direct contact with the protection layer 6. In this case, in thelight transmitting region 1, only the protective 6, the buffer layer 11and the first liquid crystal layer 132 are disposed between the firstsubstrate 101 and the second substrate 102 to increase the lighttransmittance of the light transmitting region 1 and improve thebrightness uniformity and the color uniformity of the light passing intothe photoelectric sensing device 15. At this time, e.g., the protectionlayer 6 as a whole is formed across the second substrate 102, and doesnot need a patterning process, and the material of the protection layer6 is a thermoset material. Other unspecified features of the embodimentas shown in FIG. 4 are the same as those in FIG. 3A, and please refer tothe description of the embodiment as shown in FIG. 3A.

For example, in another embodiment, as shown in FIG. 5, the lighttransmitting region 1 is not configured to comprise a liquid crystallayer. In the light transmitting region 1, air is filled between thesecond substrate 102 and buffer layer 11. The display panel comprises afirst sealant 14. The first sealant 14 is located between the secondsubstrate 102 and the buffer layer 11, surrounds the entire lighttransmitting region 1, and are in direct contact with both the bufferlayer 11 and the protection layer 6. In this case, in the lighttransmitting region 1, only the protective 6, the buffer layer 11 andthe air 132 are disposed between the first substrate 101 and the secondsubstrate 102 to increase the light transmittance of the lighttransmitting region 1 and improve the brightness uniformity and thecolor uniformity of the light passing into the photoelectric sensingdevice 15.

FIG. 6A is an overall schematic planar view of another display panelprovided in an embodiment of the present disclosure; FIG. 6B is anoverall schematic planar view of another display panel provided in anembodiment of the present disclosure; FIG. 6C is an overall schematicplanar view of yet another display panel provided in an embodiment ofthe present disclosure; FIG. 7A is an enlarged schematic view of thephotoelectric sensing region and its surrounding areas as shown in FIG.6A; and FIG. 7B is a schematic sectional view taken along the B-B′ lineas shown in FIG. 7A. For example, in the embodiment as shown in FIG. 6Aand FIG. 7A, the display panel comprises a plurality of lighttransmitting regions. The case in which a display panel comprises twolight transmitting regions is taken as an example, and in otherembodiments, a display panel can comprise three light transmittingregions (as shown in FIG. 6B), four light transmitting regions (as shownin FIG. 6C), or the like. The number of the light transmittance regionsare not limited in the embodiments of the present disclosure. Forexample, two adjacent light transmitting regions of the plurality of thelight transmitting regions are the first light transmitting region 110and the second light transmitting region 120, respectively. The displaypanel further comprises: an intermediate region 130, a third spacerlayer 73, a plurality of fourth support pillars 44, and a plurality offifth support pillars 45.

The intermediate region 130 is located between the second region aroundthe first light transmitting region 110 and the second region around thesecond light transmitting region 120. The third spacer layer 73 isdisposed in the same layer as the aforesaid first spacer layer 71 andconnected thereto, and comprises a first portion 731 and a secondportion 732. The first portion 731 and the second portion 732 areopposed to each other, and the intermediate region 130 is locatedbetween the first portion 731 and the second portion 732. The pluralityof the fourth support pillars 44 are arranged along the first portion731 and spaced away from each other. The orthographic projections of theplurality of the fourth support pillars 44 on the first substrate 101are located in the orthographic projections of the first portion 731 onthe first substrate 101. The plurality of the fifth support pillars 45are arranged along the second portion 732, and spaced away from eachother. The orthographic projections of the plurality of the fifthsupport pillars 45 on the first substrate 101 are located in theorthographic projection of the second portion 732 on the first substrate101. In the direction perpendicular to the first substrate 101, theplurality of the fourth support pillars 44, the plurality of the fifthsupport pillars 45 and the plurality of the second support pillars 42are disposed in the same layer. The shape and size of each of theplurality of the fourth support pillars 44 and the shape and size ofeach of the plurality of the fifth support pillars 45 are the same asthe shape and size of each of the plurality of the second supportpillars 42 so as to maintain the same cell thickness of the displaypanel in respectively regions (a distance between the first substrate101 and the second substrate 102).

For example, as shown in FIG. 7A, the display panel further comprises: aplurality of sixth support pillars 46 and a plurality of seven supportpillars 47. The plurality of the sixth support pillars 46 are located ona side of the first portion 731 adjacent to intermediate region 130,arranged along the first portion 731, and spaced away from each other.The plurality of the seven support pillars 47 are located on a side ofthe second portion 732 adjacent to intermediate region 130, arrangedalong the second portion 732, and spaced away from each other. In thedirection perpendicular to the first substrate 101, the plurality of thesixth support pillars 46, the plurality of the seven support pillars 47and the plurality of the first support pillars 41 are disposed in thesame layer. The shape and size of each of the plurality of the sixthsupport pillars 46 and the shape and size of each of the plurality ofthe seven support pillars 47 are the same as the shape and size of eachof the plurality of the first support pillars 41. Moreover, no spacersare disposed at the positions where the plurality of the sixth supportpillars 46 and the plurality of the seven support pillars 47 are locatedso as to maintain the same cell thickness at these positions and in thefirst region 21. This embodiment can provide support in the frame regionbetween two adjacent light transmitting regions, maintaining the samecell thickness, and further improve the stability of the frame regionbetween two adjacent light transmitting regions to maintain theuniformity of the two light transmitting regions.

For example, the planar shapes of the first portion 731 and the secondportion 732 are both linear sections which are parallel to each other sothat the structure is flat, simple, and easy to manufacture. Of course,in other embodiments, the planar shapes of the first portion 731 and thesecond portion 732 can also comprise broken lines, smooth curves, etc.,and can be designed in accordance with actual requirements of the frameregions, as long as the region between the two adjacent lighttransmitting regions can provide support effect as desired by theaforesaid embodiments.

For example, in the embodiment as shown in FIG. 7, the third regionsurrounding the first light transmitting region 110 and the third regionsurrounding the second light transmitting region 120 are connected toeach other to form an integrated region, which surrounds the entireframe region to separate the display region 3 from the frame region sothat a transition is formed between the frame region and the displayregion 3 to maintain the stability of the edge of the display region 3adjacent to the frame region.

In the embodiments as shown in FIGS. 7A-7B, the black matrix 5 coversthe intermediate region 130 so that the intermediate region 130 is notlight transmissive. The structure of the intermediate region 130 is thesame as the structure of the aforesaid third region 23. For example,when the third support pillars 43 in the third region 23 comprises aplurality of primary support pillars and a plurality of secondarysupport pillars, as shown in FIG. 7B, a plurality of intermediatespacers 49 are disposed in the intermediate region 130, and comprise aplurality of intermediate primary spacers 491 and a plurality ofintermediate secondary spacers 492. The shape and size of each of theplurality of the intermediate primary spacers 491 are the same as theshape and size of each of the plurality of the primary support pillarsin the third region 23 and the shape and size of each of the pluralityof the primary spacers 401 in the display region 3; and the shape andsize of each of the plurality of the intermediate secondary spacers 492are the same as the shape and size of each of the plurality of thesecondary support pillars in the third region 23 and the shape and sizeof each of the plurality of the secondary spacers 402 in the displayregion 3 so as to maintain the same cell thickness in the intermediateregion and the first region 21. Moreover, the plurality of theintermediate secondary spacers 492, the plurality of the second supportpillars 42, the plurality of the secondary support pillars and theplurality of the secondary spacers 402 can be made with the same mask inthe same, while the plurality of the intermediate primary spacers 491,the plurality of the first support pillars 41, the plurality of theprimary support pillars and the plurality of the primary spacers 401 canbe made with the mask in the same process. Other unspecified features ofthe embodiment as shown in FIG. 7A are the same as those in FIG. 3A, andplease refer to the description of the embodiment as shown in FIG. 3A.

In other embodiments, the plurality of the third support pillars 43 inthe third region 23 do not comprise any primary support pillar, and theintermediate region 130 do not comprise any intermediate primary spacer.Rather, the shape and size of each of the plurality of the intermediatespacers 49 in the intermediate region 130 and the shape and size of eachof the plurality of the third support pillars 43 in the third region 23are all the same as the shape and size of each of the plurality of thesecondary spacers 402 in the display region 3. For example, theplurality of the third support pillars 43 in the third region 23comprise the primary support pillar, the plurality of the intermediatespacers 49 in the intermediate region 130 do not comprise theintermediate primary spacers 491. Alternatively, the plurality of thethird support pillars 43 in the third region 23 do not comprise theprimary support pillars, and the plurality of the intermediate spacers49 in the intermediate region 130 comprise the intermediate primaryspacers 491. Namely, the aforesaid features can be combined with eachother.

FIG. 8A is another enlarged schematic view of the photoelectric sensingregion and its surrounding areas as shown in FIG. 6A, and FIG. 8B is aschematic sectional view taken along the line C-C′ in FIG. 8A. Forexample, the embodiment as shown in FIGS. 8A-8B differs from that shownin FIG. 7A in that the intermediate region 130 is an intermediatedisplay region comprising a plurality of the intermediate pixelsarranged in an array; each of the plurality of the intermediate pixelscomprises a plurality of the intermediate color sub-pixels; the blackmatrix 5 defines the plurality of the intermediate color sub-pixels inthe intermediate display region 130; the light transmittance of theintermediate display region 130 is less than the light transmittance ofthe display region 3. That is, the intermediate display region 130 is agray display region. The brightness of the intermediate display region130 is relatively low, and not 30% greater than the brightness of thedisplay region 3. For example, by allowing the portion of the blackmatrix 5 located in intermediate display region 130 and the portion ofthe black matrix 5 located in the display region 3 to have differentareas, the aperture ratio of the intermediate display region 130 is lessthan the aperture ratio of the display region 3. For example, in theembodiments as shown in FIG. 8A and FIG. 8B, the line width w2 of theblack matrix 5 located in intermediate display region 130 is greaterthan the line width w1 of the portion of the black matrix 5 located inthe display region 3 so as to achieve that the brightness of theintermediate display region 130 is not 30% greater than the brightnessof the display region 3. Of course, in other embodiments, it is alsofeasible to provide an additional light transmittance adjustment film,such as, a light filter layer (other than the above-described color filmlayer) to decrease the light transmittance of the intermediate displayregion 130 so as to achieve that the brightness of the intermediatedisplay region 130 is not 30% greater than the brightness of the displayregion 3. In this embodiment, the brightness of the intermediate displayregion 130 is decreased to achieve a dark display. For example, theintermediate display region 130 always displays a black image by adisplay drive circuit. It can simplify the structure of the intermediatedisplay region 130, simplify the design of the display drive circuit,decrease the process difficulty, and does not substantially affect thedisplay effect near the intermediate display region 130 due to the smallarea of the intermediate display region 130.

Alternatively, in other embodiments, the intermediate display region 130is a normal display region, and the light transmittance of theintermediate display region 130 is equal to the light transmittance ofthe display region 3, that is, a normal display, so as to improve thedisplay quality near the intermediate display region 130 and improve theuser's experience.

For example, in the embodiment as shown in FIG. 8A, the display panelfurther comprises a plurality of the intermediate spacers, and theplurality of the intermediate spacers are located in the intermediatedisplay region 130 arranged in an array. For example, the structure ofthe plurality of the intermediate spacers are the same as the structureof the plurality of the spacers 40 in the display region 3.

For example, in at least one embodiment, the arrangement density of theplurality of intermediate secondary spacers 492 in the intermediatedisplay region 130 is less than the arrangement density of the pluralityof spacers 402 in the display region 3. For example, in the intermediatedisplay region, the arrangement density of the intermediate primaryspacers 491 is less than the plurality of the primary spacers 401 in thedisplay region 3, and the arrangement density of the intermediatesecondary spacers 492 is less than the arrangement density of theplurality of the secondary spacers 402 in the display region 3. Forexample, the arrangement density of the secondary spacers 402 in thedisplay region 3 is 287/288, that is, the display region 3 is configuredto contain 287 the secondary spacers 402 per 288 sub-pixels; and thearrangement density of the primary spacers 401 is 1/288, that is, thedisplay region 3 is configured to contain 1 primary spacer per 288sub-pixels. However, in the intermediate display region, the arrangementdensity of the intermediate secondary spacers 492 is 70/72, that is, 70intermediate secondary spacers are disposed in the intermediate displayregion per 72 sub-pixels; for example, the arrangement density of theintermediate primary spacers is 1/72, that is, 1 intermediate primaryspacer 491 is disposed in the intermediate display region per 72sub-pixels. As set forth above, as compared with the display region 3,the black matrix 5 in the intermediate display region has a relativelylarge area. During the manufacture of the display panel, after formationof the black matrix 5, the black matrix 5 defines a plurality of thesub-pixel openings in the display region 3 and defines a plurality ofthe intermediate sub-pixel openings in the intermediate display region;the opening size of each of intermediate sub-pixels is less than theopening size of each of sub-pixels. During subsequent process offorming, e.g., the protection layer 6, as compared with the intermediatesub-pixel opening, the film layer for forming the protection layer 6 iseasier to enter the sub-pixel openings. Thus, the portion of the finallysolidified protection layer 6 located in the intermediate display regionhas a greater thickness in the direction perpendicular to the firstsubstrate 101 than the thickness in the direction perpendicular to thefirst substrate 101 of the portion of the protection layer 6 located inthe display region 3. That is, the protection layer further covers theintermediate display region; the portion of the protection layercovering the intermediate display region has s greater thickness in thedirection perpendicular to the first substrate than the thickness in thedirection perpendicular to the first substrate of the portion of theprotection layer covering the intermediate display region. As a result,the spacers with the same size in the display region 3 are easier todeform than those with the same size in the intermediate display regionunder external force, that is, the intermediate primary spacers 491 andthe intermediate secondary spacers 492 in the intermediate displayregions are less prone to deform. Because the number and the arrangementdensity of the intermediate secondary spacers 492 are far greater thanthe number and the arrangement density of the intermediate primaryspacers, the number and the arrangement density of the secondary spacers492 have a greater influence on the cell thickness stability of theintermediate display region 130. Therefore, the arrangement density ofthe intermediate secondary spacer 492 in the intermediate display region130 is less than that of the secondary spacer 402 in the display region3, so as to increase the possibility amount of deformation of theintermediate secondary spacer 492 in the intermediate display region 130so that it can play a sufficient buffer role in the intermediate displayregion, maintain a stable cell thickness, and maintain the same cellthickness as the display region 3 as much as possible.

In FIG. 6A-6B, the plurality of the light transmitting regions arearranged along a line, that is, the planar arrangement pattern of theplurality of the light transmitting regions is a linear section. Inother embodiments, the plurality of light transmitting regions may notbe arranged along a straight line. For example, the planar arrangementpattern of the plurality of the light transmitting regions is atriangle, a rectangle or other polygons, or a circle, which is notlimited in the embodiment of the present disclosure. As for the casesthat the display panel comprises three, fourth or more lighttransmitting regions, the structure of the intermediate region betweenany two adjacent light transmitting regions are the same as that of theintermediate region in FIGS. 7A-7B, or the same as that of theintermediate display region in FIGS. 8A-8B, and the aforesaid thirdregions 23 are present between the frame region 2 and the display region3, which is not reiterated here.

As an example, in the embodiment as shown in FIG. 6C, the photoelectricsensing region 20 comprises at least three light transmitting region,e.g., comprising a first light transmitting region 110, a second lighttransmitting region 120, a third light transmitting region 1300, and anauxiliary functional region 140. For example, the auxiliary functionalregion 140 is a supplementary light region for providing supplementarylight configured to emit supplementary light when the first lighttransmitting region 110, the second light transmitting region 120 andthe third light transmitting region 1300 operates. The supplementarylight can be reflected by any object to be imaged, such as a finger(when the photoelectric sensing device is a fingerprint recognitiondevice) or a face (when the photoelectric sensing device is a facerecognition device or a camera), and then incident into the first lighttransmitting region 110, the second light transmitting region 120 andthe third light transmitting region 1300 to be absorbed by thephotoelectric sensing device disposed in the first light transmittingregion 110, the second light transmitting region 120 and the third lighttransmitting region 1300 so as to improve the imaging quality of thephotoelectric sensing device when the external light is insufficient.For example, in other embodiments, the auxiliary functional region 140is also replaced with the fourth light transmitting region, that is, thephotoelectric sensing region 20 comprises fourth light transmittingregions, and each of the four light transmitting regions is used toprovide the aforesaid photoelectric sensing device. At this time, thefirst light transmitting region 110, the second light transmittingregion 120, the third light transmitting region 1300 and the fourthlight transmitting region 140 are arranged in a 2×2 matrix, and theplanar arrangement pattern thereof is a rectangle.

For example, as shown in FIG. 6C, the first light transmitting region110, the second light transmitting region 120 and 1300 and auxiliaryfunctional region are arranged in a 2×2 matrix, an interval between thefirst row and the second row of the 2×2 matrix and an interval betweenthe first column and the second column of the 2×2 matrix form a crossregion 150, and the structure of the cross region 150 is the same as thestructure of the intermediate region. Other structures between theadjacent two, e.g., the fourth support pillars, the fifth supportpillars, the sixth support pillars, the seven support pillars, etc. areall the same as those for the previous embodiments, which are notreiterated here.

In the above embodiments, the position of the photoelectric sensingregion 20 is near the edge of the display panel, that is, near thenon-display region, to facilitate to connect the signal lines located inthe non-display region and for controlling the operation of thephotoelectric sensing device in the photoelectric sensing region 20 tothe photoelectric sensing region 20, e.g., these signal lines can bedirectly connected to the photoelectric sensing region 20 from thenon-display region without passing through the display region. However,in other embodiments, the photoelectric sensing region 20 can also belocated at another position. For example, FIG. 6D is an overallschematic planar view of yet another display panel provided in anembodiment of the present disclosure. As shown in FIG. 6D, thephotoelectric sensing region 20 is located in the intermediate regionsof the display panel. At this time, at least a portion of the aforesaidsignal lines, such as, a power line (a VDD line, etc.) needs to passthrough the display region 3, and the orthographic projection of thesignal line is located in the black matrix. If necessary, an insulatinglayer can be provided between this signal line and the signal line(s) inthe black matrix to prevent a signal crosstalk.

For example, in the above embodiments, the display panel is a liquidcrystal display panel, the first substrate 101 is an array substrate,and the second substrate 102 is a color film substrate. Alternatively,in other embodiments, the display panel is an organic light-emittingdiode (OLED) display panel, the first substrate 101 is an arraysubstrate, the second substrate 102 is a package cover plate, and otherrespective structures can be designed in accordance with theconfiguration of the OLED display panel. Of course, in the OLED displaypanel, it is also feasible to use a film for package, instead of apacking cover panel.

In the embodiments of the present disclosure, e.g., the first substrate101 and the second substrate 102 are both substrate substrates, such as,glass substrates, quartz substrates, polyimide substrates, or the like.The particular materials of the first substrate 101 and the secondsubstrate 102 are not limited in the embodiments of the presentdisclosure.

FIG. 9 is a schematic diagram of a method of preparing a display panelprovided in an embodiment of the present disclosure. As shown in FIG. 9,a buffer layer 11, a driving circuit layer 12, a second orientationlayer 92, as well as first support pillars, second support pillars,third support pillars and spacers are sequentially formed on the firstsubstrate 101, and a black matrix 5, a plurality of pixels, a firstspacer layer, a second spacer layer and a protection layer and otherdesired film layers are sequentially formed on the second substrate 102.For example, a second sealant 140 is applied around the display regiononto the second substrate 140; and a liquid crystal is dropped onto thefirst substrate 101. Since the area of the light transmitting region 1is very small as compared with the droplets of the liquid crystal, it isdifficult to precisely drop the liquid crystal into the lighttransmitting region 1. Thus, the liquid crystal can be dropped into thedisplay region 3 or other regions with a relatively large area. Then,the second substrate 102 and the first substrate 101 are assembled, andthe second substrate 102 and the first substrate 101 are bonded togethervia the second sealant 140. The liquid crystal flows into the lighttransmitting region 1 sequentially through the second region 22 and thefirst region 21, as well as the gaps between the plurality of the firstsupport pillars 41 and the gaps between the plurality of the secondsupport pillars 42, so that the liquid crystal is filled into the lighttransmitting region 1.

In the method of preparing the display panel, the first spacer layer 71and the second spacer layer 72 can be formed by performing the samepatterning process on the same film layer. By performing the samepatterning process on the film layer for forming the color film tosimultaneously forming the color films in the plurality of thesub-pixels 81/82/83, the first spacer layer 71, and the second spacerlayer 72, forming the plurality of the second support pillars 42, theplurality of the third support pillars 43, the plurality of thesecondary spacers 402 and the plurality of the fourth support pillars 44and the plurality of the fifth support pillars 45 with the same mask inthe same patterning process, and forming the plurality of the firstsupport pillars 41, the plurality of the primary spacers 401 and theplurality of the sixth support pillars 46 and the plurality of the sevensupport pillars 47 with the same mask in the same patterning process,the manufacture process is simplified. In addition, the structure of theplurality of the intermediate spacers and the plurality of the spacers40 in the display region 3 are formed with the same mask in the samepatterning process.

For example, during the formation of the display panel as shown in FIG.3A, after forming the protective material layer covering the entiresecond substrate 102, the protective material layer is patterned with amask to remove a portion of the protective material layer located in thelight transmitting region 1 to form the protection layer 6 as shown inFIG. 3A. Here, e.g., the material of the protection layer 6 may be aphotosensitive material, e.g., a photosensitive resin.

For example, during the formation of the display panel as shown in FIG.5, after forming the first sealant 14 around the entire lighttransmitting region 1 on the first substrate 11, e.g., by preciseapplication, a liquid crystal is dropped onto the display region 3 onthe first substrate 11, and then the substrates are assembled.

FIG. 10 is a schematic view of a display device provided in anembodiment of the present disclosure. As shown in FIG. 10, the displaydevice 1000 comprises any one of display panels 100 as provided in theembodiments of the present disclosure. For example, the display device1000 may be a liquid crystal display device or an OLED display device.For example, the display device can be realized as the followingproducts: mobile phones, tablet computers, displays, notebook computers,ATMs, or any other product or component having a display function. Thedisplay device 1000 have all the technical effects of the display panel100, which are not reiterated here.

For example, the side of the second substrate 102 away from the firstsubstrate 101 is a display side. The display device further comprisesthe photoelectric sensing device 15, as shown in FIG. 3A. For example,the photoelectric sensing device 15 is located on a side of the firstsubstrate 101 away from the second substrate 102, and configured toreceive a light from the display side, that is, light from the displayside passes through the light transmitting region into the photoelectricsensing device 15. The light received by the photoelectric sensingdevice 15 in the display device provided in the embodiments of thepresent disclosure is in a relatively large amount, has relatively highuniformity of brightness and color.

For example, other structures of the display device 1000, e.g., abacklight source as required in the liquid crystal display device, etc.,can be designed by referenced to conventional technology in the art,which are not limited in the embodiments of the present disclosure.

For example, the display device may be a display module. For example, itcomprises the aforesaid display panel and the photoelectric sensingdevice 15, or comprises the aforesaid display panel and a backlightsource. Alternatively, it can be a display apparatus which furthercomprises other structures, such as, mobile phones, tablet computers,displays, notebook computers, ATMs, or other products as set forthabove.

What are described above is related to the illustrative embodiments ofthe disclosure only and not limitative to the scope of the disclosure;the scopes of the disclosure are defined by the accompanying claims.

1. A display panel comprising: a display region and a photoelectricsensing region, wherein the display region is located outside thephotoelectric sensing region, the display region comprises a pluralityof pixels arranged in an array, each pixel of the plurality of thepixels comprises a plurality of color sub-pixels; and the photoelectricsensing region comprises a light transmitting region and a frame areathat surrounds the light transmitting region, wherein the frame regioncomprises: a first region surrounding the light transmitting region; asecond region located on a side of the first region away from the lighttransmitting region and surrounding the first region; and a third regionlocated on a side of a second region away from the light transmittingregion and located between the second region and the display region toseparate the second region from the display region; a plurality ofspacers arranged in an array, wherein the plurality of the spacers islocated inside the display region while outside of the lighttransmitting region; a plurality of first support pillars located insidethe first region, arranged around the light transmitting region, andspaced away from each other; a plurality of second support pillarslocated inside the second region, arranged around the second region, andspaced away from each other; and a plurality of third support pillarslocated in the third region and arranged in an array.
 2. The displaypanel according to claim 1, further comprising: a first substrate; asecond substrate opposite to the first substrate; a black matrix locatedon a side of the second substrate adjacent to the first substrate,covering the frame area, and defining the plurality of the colorsub-pixels in the display region, wherein orthographic projections ofthe plurality of the spacers, orthographic projections of the pluralityof the first support pillars, orthographic projections of the pluralityof the second support pillars, and orthographic projections of theplurality of the third support pillars on the first substrate arelocated within an orthographic projection of the black matrix on thefirst substrate; and a protection layer located in the second substrateadjacent to and located on a side of the black matrix adjacent to thefirst substrate, covering the frame region and the display region,wherein the plurality of the spacers, the plurality of the first supportpillars, the plurality of the second support pillars, and the pluralityof the third support pillars are located between the first substrate andthe protection layer to maintain a distance between the first substrateand the second substrate.
 3. The display panel according to claim 2,further comprising: a first spacer layer located in the second regionand located between the black matrix and the protection layer, and theorthographic projections of the plurality of the second support pillarsare located within an orthographic project of the first spacer layer onthe first substrate.
 4. (canceled)
 5. The display panel according toclaim 3, wherein in the first region, the protection layer is directlycontacted with the black matrix; the protection layer has a stepconfiguration in the first region, the step configuration comprises afirst portion away from the second region and a second portion adjacentto the second region; and in a direction vertical to the firstsubstrate, a height of the first portion is less than a height of thesecond portion, and a height of the first support pillars is greaterthan a height of the second support pillars.
 6. (canceled)
 7. Thedisplay panel according to claim 1, wherein a planar arrangement patternof the plurality of the first support comprises at least a ring, or theplanar arrangement pattern of the plurality of the first support pillarscomprises a plurality of concentric rings; along radial directions ofthe concentric rings, the first support pillars in the plurality of theconcentric rings are aligned with each other, or the first supportpillars in adjacent concentric rings of the plurality of the concentricrings are staggered to each other.
 8. The display panel according toclaim 7, wherein a ratio of a total area of the orthographic projectionsof the plurality of the first support pillars on the first substrate toa total area of the orthographic projections of the plurality of thesecond support pillars on the first substrate is from 5 to
 10. 9.(canceled)
 10. The display panel according to claim 5, furthercomprising: a second spacer layer located in the third region andlocated between the black matrix and the protection layer, and theorthographic projections of the plurality of the third support pillarsare located within an orthographic project of the second spacer layer onthe first substrate.
 11. (canceled)
 12. The display panel according toclaim 10, further comprising: a color film layer located on a side ofthe second substrate adjacent to the first substrate and comprises afirst portion, a second portion and a third portion, wherein the firstportion of the color film layer is located in the plurality of the colorsub-pixels in the display region, and an orthographic projection of thefirst portion of the color film layer on the first substrate does notoverlap with the orthographic projection of the black matrix on thefirst substrate; the second portion of the color film layer is locatedin the second region and configured as the first spacer layer, and anorthographic projection of the second portion of the color film layer inthe first substrate overlaps with the orthographic projection of theblack matrix in the first substrate; and the third portion of the colorfilm layer is located inside the third region and configured as thesecond spacer layer.
 13. The display panel according to claim 12,wherein the plurality of the spacers located in the display regioncomprise a plurality of primary spacers and a plurality of secondaryspacers, a height of the primary spacers in the direction vertical tothe first substrate is greater than a height of the secondary spacers inthe direction vertical to the first substrate; a shape and size of eachof the plurality of the second support pillars and a shape and size ofeach of the plurality of the third support pillars are identical with ashape and size of each of the plurality of the secondary spacers; and ashape and size of each of the plurality of the first support pillars areidentical with a shape and size of each of the plurality of the primaryspacers.
 14. The display panel according to claim 2, further comprising:a buffer layer located on a side of the first substrate adjacent to thesecond substrate and directly contacted with the first substrate; and adriving circuit layer located on a side of the buffer layer away fromthe first substrate and between the display region and the frame area,wherein the plurality of the spacers, the plurality of the first supportpillars, the plurality of the second support pillars, and the pluralityof the third support pillars are all located between the driving circuitlayer and the protection layer, the driving circuit layer is notdisposed in the light transmitting region, and an edge of the drivingcircuit layer adjacent to the light transmitting region is in the rustregion or on a border between the light transmitting region and the rustregion.
 15. (canceled)
 16. The display panel according to claim 14,wherein in the light transmitting region, a first liquid crystal layeris disposed between the buffer layer and the second substrate, and thefirst liquid crystal layer in in direct contact with the buffer layer;in the frame region and the display region, a second liquid crystallayer is disposed between the protection layer and the driving circuitlayer, a liquid crystal in the rust liquid crystal layer is incommunication with a liquid crystal in the second liquid crystal layerthrough gaps among the plurality of the first support pillars, gapsamong the plurality of the second support pillar, and gaps among theplurality of the third support pillars.
 17. (canceled)
 18. The displaypanel according to claim 14, wherein no liquid crystal is disposed inthe light transmitting region; in the light transmitting region, a gapbetween the second substrate and the buffer layer is filled with air;the display panel comprises a first sealant, and the first sealant islocated between the second substrate and the buffer layer, surrounds thelight transmitting region, and is in direct contact with the bufferlayer and the protection layer.
 19. The display panel according to claim12, further comprising a plurality of light transmitting regions,wherein two adjacent light transmitting regions comprise a first lighttransmitting region and a second light transmitting region,respectively; the display panel further comprises: an intermediateregion located between the second region surrounding the first lighttransmitting region and the second surrounding the second lighttransmitting region; a third spacer layer arranged to be in a same layeras the first spacer layer and in connection with the first spacer layer,and comprising a first portion and a second portion, wherein the firstportion and the second portion are opposed to each other in a direction,which is in a plane parallel to the first substrate, perpendicular to adirection from the first light transmitting region to the second lighttransmitting region, and the intermediate region is located between thefirst portion and the second portion; a plurality of fourth supportpillars arranged along the first portion and spaced away from eachother, wherein orthographic projections of the plurality of the fourthsupport pillars on the first substrate are located in an orthographicprojection of the first portion on the first substrate; a plurality offifth support pillars arranged along the second portion and spaced awayfrom each other, wherein orthographic projections of the plurality ofthe fifth support pillar on the first substrate are located in theorthographic projections of the second portion on the first substrate;in the direction perpendicular to the first substrate, the plurality ofthe fourth support pillars, the plurality of the fifth support pillarsand the plurality of the second support pillar are disposed in a samelayer, and a shape and size of each of the plurality of the fourthsupport pillars are identical with a shape and size of each of theplurality of the second support pillars.
 20. The display panel accordingto claim 19, further comprising: a plurality of sixth support pillarslocated on a side of the first portion adjacent to the intermediateregion, arranged along the first portion and spaced away from eachother, and a plurality of seven support pillars located on a side of thesecond portion adjacent to the intermediate region, arranged alone thesecond portion and spaced away from each other, wherein in the directionperpendicular to the first substrate, the plurality of the sixth supportpillars, the plurality of the seven support pillars and the plurality ofthe first support pillars are disposed in a same layer, a shape and sizeof each of the plurality of the sixth support pillars and a shape andsize of each of the plurality of the seven support pillars are identicalwith a shape and size of each of the first support pillars. 21.(canceled)
 22. (canceled)
 23. The display panel according to claim 19,wherein the intermediate region is an intermediate display region, theintermediate display region comprises a plurality of intermediate pixelsarranged in an array, each of the plurality of the intermediate pixelscomprises a plurality of color intermediate sub-pixels, the black matrixdefines the color intermediate sub-pixels in the intermediate displayregion, wherein a light transmittance of the intermediate display regionis less than or equal to a light transmittance of the display region.24. The display panel according to claim 23, wherein the protectionlayer further coven the intermediate display region; a thickness of aportion of the protection layer covering the intermediate display regionin a direction perpendicular to the first substrate is greater than athickness of a portion of the protection layer covering the displayregion in a direction perpendicular to the first substrate. 25.(canceled)
 26. The display panel according to claim 23, furthercomprising: a plurality of intermediate spacers located in theintermediate display region and arranged in an array, wherein anarrangement density of the plurality of the intermediate spacers in theintermediate display region is less than an arrangement density of theplurality of the spacers in the display region.
 27. The display panelaccording to claim 19, wherein the photoelectric sensing regioncomprises at least three light transmitting regions and an auxiliaryfunctional region, the at least three light transmitting regions and theauxiliary functional region are arranged in a 2×2 matrix, an intervalbetween a first row and a second row of the 2×2 matrix and an intervalbetween a first column and a second column of the 2×2 matrix form across region, a structure in the cross region is identical with astructure in the intermediate region.
 28. (canceled)
 29. A displaydevice comprising a display panel comprising: a display region and aphotoelectric sensing region, wherein the display region is locatedoutside the photoelectric sensing region, the display region comprises aplurality of pixels arranged in an array, each pixel of the plurality ofthe pixels comprises a plurality of color sub-pixels; and thephotoelectric sensing region comprises a light transmitting region and aframe area that surrounds the light transmitting region, wherein theframe region comprises: a first region surrounding the lighttransmitting region; a second region located on a side of the firstregion away from the light transmitting region and surrounding the firstregion; and a third region located on a side of a second region awayfrom the light transmitting region and located between the second regionand the display region to separate the second region from the displayregion; a plurality of spacers arranged in an array, wherein theplurality of the spacers is located inside the display region whileoutside of the light transmitting region; a plurality of first supportpillars located inside the first region, arranged around the lighttransmitting region, and spaced away from each other; a plurality ofsecond support pillars located inside the second region, arranged aroundthe second region, and spaced away from each other; and a plurality ofthird support pillars located in the third region and arranged in anarray.
 30. The display device according to claim 29, wherein a side ofthe second substrate away from the first substrate is a display side;the display device further comprises: a photoelectric sensing devicelocated in the light transmitting region and on a side of the firstsubstrate away from the second substrate, and configured to receivelight from the display side.